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Variability type FKCOM (from B/gcvs/vartype.txt)

FKCOM  FK Comae Berenices-type variables. These are rapidly rotating
       giants with nonuniform surface brightnesses, which have G-K spectral
       types with broad H and K Ca II emission and sometimes Halpha.
       They may also be spectroscopic binary systems. Periods of light
       variation (up to several days) are equal to rotational periods,
       and amplitudes are several tenths of a magnitude. It is not
       excluded that these objects are the product of further evolution
       of EW (W UMa) close binary systems (see below).


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